Frequency diversity circular array radar imaging method for transmitting vortex electromagnetic waves

• Main Authors: SHI XINGXIANG, LIAO KEFEI, REN WENXIN, XIE YUELEI, JI YUANFA, SUN XIYAN, WANG HAITAO, JIANG JUNZHENG, ZHANG JING, LI XIUPING
• Format: Patent
• Language: Chinese; English
• Published: 24.06.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a frequency diversity circular array radar imaging method for emitting vortex electromagnetic waves, and the method employs a frequency diversity array (FDA), employs a frequency modulation array to generate vortex waves, and achieves the radar imaging. The electromagnetic vortex is applied to the FDA radar imaging system, the spiral phase wavefront structure of the electromagnetic vortex is utilized, higher space target resolution can be obtained, the structure is simple, and imaging information richer than that of a traditional frequency diversity array radar can be obtained. The method provides new possibility in the field of electromagnetic imaging, and has a good application prospect. 本发明公开了一种发射涡旋电磁波的频率分集圆阵雷达成像方法，该方法利用频率分集阵列（Frequency Diverse Array，FDA），利用频率调制阵列产生涡旋波，并实现雷达成像；将电磁涡旋应用在FDA雷达成像系统中，将电磁涡旋应用在FDA雷达成像系统中，利用电磁涡旋的螺旋形相位波前结构，可以获得更高的空间目标分辨率，结构简单，可获得比传统频率分集阵列雷达更丰富的成像信息。在电磁成像领域提供新的可能性，具有良好的应用前景。